A string lamp can carry out the effect of RGB full colors changing gradually, the jump, running water, chase, scanning, letter-writing and so on. It can provide you different dynamic effect of of different color’s luminance, safe and energy saving, long lifespan and little weaken, maintenance freely etc. it is suitable for digital RGB illumination letters, spurts draws, channel letters, various kinds of light sources of illumination facility inside and outside anomalous display. It is good choice to take the place of the advertising billboard of neon light.